Im actually getting the same problems, currently i try to grind as much apb as possible, cuz it just catches me like no other game currently can.. but during the time the servers/districts are filled im always encountering high latency problems between 150 and 200 ms.
If its actually later that day when the population drops and some districts getting empty 10:00 - 11:00 pm (GMT+1) my connection goes back to the regular 20-30ms im used to.
Just hope this latency issues many player are affected by gets fixed as soon as possible.